What to do and how to do it; the American boys handy book (1920)
Beard, Daniel Carter, 1850-1941 · New York, C. Scribner's sons · leaf 70
tissue, and throwing off the freeoxygen for the animals to breathe. By having plants as wellas animals in your tank, both classes are supplied with breathingmaterial. When you start your aquarium, first cover the bot-tom with sand and gravel. Then build your rockery; it isbetter to cement it… … FiG. so. en the roots of your plants to small stones with a bit of string,and arrange them about the tank to suit your taste. Fill thetank with water, and let it stand in the window for a week ortwo, where it will receive plenty of light and but little sun.By that time all your plants will be…
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